 This is just an ordinary toothbrush Last week I needed to make it fit this case, but it didn't So I cut off a piece to make it work and it still holds all right even with my rather large hands But most importantly now it fits So this small piece is kind of useless Which made me think what if we were to make all our toothbrushes smaller Production methods pretty much stays the same Transportation won't change and it won't cost more But it would require a little less material to make it So I did some math the average weight of this little part is about 0.8 gram And we use about three brushes each year in these places is common to brush teeth Which are about two billion people and this ends up in a lot of toothbrushes and material But math was never my strong point So I also dove into some researches and to not overestimate the situation went for the lowest outcome If we were to make our toothbrushes smaller, we would save at least 64,000 kilogram plastic each year And this is just a toothbrush Imagine